// See the file "COPYING" in the main distribution directory for copyright.

#ifndef binpac_exception_h
#define binpac_exception_h

#include <cinttypes>
#include <cstdint>
#include <string>

namespace binpac {

class Exception {
public:
    Exception(const char* m = nullptr) : msg_("binpac exception: ") {
        if ( m )
            append(m);
        // abort();
    }

    void append(std::string_view m) { msg_ += m; }
    std::string msg() const { return msg_; }
    const char* c_msg() const { return msg_.c_str(); }

protected:
    std::string msg_;
};

class ExceptionEnforceViolation : public Exception {
public:
    ExceptionEnforceViolation(const char* where) { append(binpac_fmt("&enforce violation : %s", where)); }
};

class ExceptionOutOfBound : public Exception {
public:
    ExceptionOutOfBound(const char* where, int len_needed, int len_given) {
        append(binpac_fmt("out_of_bound: %s: %d > %d", where, len_needed, len_given));
    }
};

class ExceptionInvalidCase : public Exception {
public:
    ExceptionInvalidCase(const char* location, int64_t index, const char* expected)
        : location_(location), index_(index), expected_(expected) {
        append(binpac_fmt("invalid case: %s: %" PRIi64 " (%s)", location, index, expected));
    }

protected:
    const char* location_;
    int64_t index_;
    std::string expected_;
};

class ExceptionInvalidCaseIndex : public Exception {
public:
    ExceptionInvalidCaseIndex(const char* location, int64_t index) : location_(location), index_(index) {
        append(binpac_fmt("invalid index for case: %s: %" PRIi64, location, index));
    }

protected:
    const char* location_;
    int64_t index_;
};

class ExceptionInvalidOffset : public Exception {
public:
    ExceptionInvalidOffset(const char* location, int min_offset, int offset)
        : location_(location), min_offset_(min_offset), offset_(offset) {
        append(binpac_fmt("invalid offset: %s: min_offset = %d, offset = %d", location, min_offset, offset));
    }

protected:
    const char* location_;
    int min_offset_, offset_;
};

class ExceptionStringMismatch : public Exception {
public:
    ExceptionStringMismatch(const char* location, const char* expected, const char* actual_data) {
        append(binpac_fmt("string mismatch at %s: \nexpected pattern: \"%s\"\nactual data: \"%s\"", location, expected,
                          actual_data));
    }
};

class ExceptionInvalidStringLength : public Exception {
public:
    ExceptionInvalidStringLength(const char* location, int len) {
        append(binpac_fmt("invalid length string: %s: %d", location, len));
    }
};

class ExceptionFlowBufferAlloc : public Exception {
public:
    ExceptionFlowBufferAlloc(const char* reason) { append(binpac_fmt("flowbuffer allocation failed: %s", reason)); }
};

} // namespace binpac

#endif // binpac_exception_h
